Bearing for ink roll doctors



April 25, 1933. A D KERR 1,905,104

BEARING FOR INK ROLL DOCTORS Filed Nov. 28, 1950 2 Sheets-Sheet l J r2 72)? Er)- April 25, 1933. A. D. KERR BEARING FOR INK ROLL DOCTORS Filed Nov. 28. 1950 2 Sheets-Sheet 2 Jrzibar Z7. ZLr r 37' wiuaya' Patented Apr. 25, 1 933 ARTHUR DU'NLAP KERR, or HOLDEN, MAssAoHusnrrs, assreivon To RICE, BARTONQ j FALES, INCORPORATED, OF'

MASSACHUSETTS BEARING ronmx Rom. noorons Application filed November 28, 1930. Serial No. 498,534.

This invention relates to bearings for doctorson textile printing machines and the like. i l A The principal objects of the invention are to provide a practicable form of bearing, for the doctor so as to use less power, permit of an improved quality of printing, and require less frequent replacement of worn parts; to provide a construction which will reduce the number of parts of the doctor from three to one and to provide an improved means for supporting the bearing so as to permit of adjustment without danger of the dropping of one end of the doctor.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a face View of a bearing for a textile machine doctor constructed in accordance with this invention, shown partly in section;

Fig. 2 is a sectional viewon the line 22 of Fig. 1; r

Fig. 3 is a central sectional view of the roller on the bearing;

Fig. 4 is a view like Fig. 1 showing how the invention can be applied when the bearing is centrally located, and

Fig. 5 is an end view of the same.

The doctors for textile printing machines as heretofore constructed are vibrated longitudinally for purposes well understood in this art. As they slide endwise in their bearings it is considered necessary to put renewable sleeves on both the journals to take up the wear. These sleeves are made of steel and are replaced Whenever suificiently worn, which occurs frequently. Of

course, these journals are located at the opposite ends of the doctor and they have to be lubricated. When the sleeves are worn, the support for the doctor becomes inaccurate and the doctor cannot properly accomplish its work.

WORCESTER, 'MASSACHUSETTS, A CORPORATION" or By lhe Prsntiiwentbn. stead of. hay

ing a tubular bearing at'each end extending longitudinally, I substitute a grooved roller in the groove of which rests each journal end of the doctor and the renewable sleeve is entirely eliminated.

In the form shown in the first three fig; 7

ures the whole bearing is supported by. a

foot 10, which is fixedto the machineframe instead of being adjustable circumferentially as has been the casewith the old foot. This foot is provided with a central'hub 11 provided with a circumferential or arcuate screwthread 12. j

On this hub is located a split collar; 13 having a screw l larranged across the split por'- tion and tangential to the screw 12Jand meshing therewith. The turning of this screw 14 willresult in turning the collar 13. This split collar is also fastened in fixed position by screwingup a nut 15 on this screw 14:.

The collar constitutes abracketwhich car- 7 ries a cylinder 16 arranged tangentially into f f the end of which extends a screw 17 witha winged nut-18 on the'end. Thisls'crew is prevented from having any longitudinalmotion in the cylinder by a c0llar19; within the cylinder 16. This screwat its end enters a screw-threaded axial opening inthe end of asupport 20 and obviously the turning of the wing nut willxmove this, support out and in, being carried by the inside of the cylinder and accurately supported thereby. A stop screw 21 extends from the cylinder into a longitudinal slot 22 in this support tolimit its motion in either direction, and

to prevent support 2 O -from rotating in the p cylinder 16. q g p LOn the. support 20 there is a reduced end 24; carryinginn'erracesof a set of ball bear-f ings 25. Theouter races are located in a rolleror wheel 26 and fixed thereto in any ordinary way-andthe wholeis secured by lock and cheek 'nuts,27 as desired; This roller :26 therefore is nounte d on anti-triction bearings v andis' capable of. rotation without absorbing much power. Itis profivided -with a semi-cylindrical annular -the doctor sliding instead otrotating-the zowear on-the old bearings came all g on one;

groove and in this groove rests 'the' journal V end 28 of vthe 'doctor'29'. Thedoctor is vi:

wbrated longitudinallyin'the usual wayan'd held againstthefldoctoring surface by y'ield ingmeans as usual,'not shown 'herein'.

g It will be seen "that'this vibration of the l {doctorwill bejrendered muc'h'easier and that,

with th e bearing of the jdo'ct'or journalo'n this roller,it s endwise motion can be carried on for a long period of time-without any wear. that will reduce the steadines'sfofthe doctor or quality of printing. There will beless wear and'theretore less trequentreplacement of worn parts. On' account o1 side of the bearings. By the present invention this -is eliminated. "This bearingisito isome extent selt-aligning'as the journal. of

the doctor is notconfined in adefinite cyllindrical opening.- r' H V It will be seen that the twosleeveson the journals of the'doctor are no longer necessary, that less power is required to operate the doctors on account of the roll ng motion insteadof the sliding motion under pres- J sure and perfect alignment can be secured at all times.

'Itwill be understood that while the use' Y of antifriction bearings. improves the de- I 7 Vice, thisinvention can be carr ed out witl1- out the use of such bearings.

1 The improved foot for holding the whole dev'ice also involves some additional advantages asjthis foot does not have tol be loosened in' the side frame in order to f ad'- nal of the doctor;

supported by said hub, a screw extending screw tln ead, a split collar surrounding and 7 through the collar froml one side to the other and meshing with the thread on the hub for adjusting the collar circumferenw. tially, means on the screw for tightening the', f

collar on the hub, and a roller supported by' 1' the collar serving as a bea ring for 2. The combination with a' doctor having the jOllI? 75. a journal for supportingit, of a fixed foot V 7 "having a hub, a collar mounted" to turn on Y ij the.hub,'a cylinder carried by the collar, a

support carried by the cylinder, and a grooved roller fr-eelyfrotatableon thersup- I pert in the groove'of which said journal-is adaptedto move'longitudinally and to turn.

. 3; The combination with a doctor having a'ijournal for supporting it, of a fixedfoot having a hub,-,a collar mounted to turn on In testimony whereof I have hereunto.

aiiixed my signature.

I ARTHUR DUNLAP :KERR; V

7 its justit, which in the old style sometimes re- V 1 'sulted in the dropping of the doctorjat one end, causing'considerable trouble and delay.

Inthe fornr'shown in Figs. 4t and5 simi-lar'conditions exist-{except that the roller support is located centrally instead of} being overhung. In this case the foot 10 is the s'ame in' all respects but the bracket 30 is of a different shapehavingtwo arms 31 extending outwardly from the 'collar- 30 and with holes to support a shaft 32, the shaft and one of the' holes beingscrew-threaded for adjustment, Otherwise the parts are I substantially the same.

Although I have illustrated and describ ed only two formsof the'invention Imam awareflof the factth at other modifications can beimade thereinby any personskilled in the artrwithout departingfrom the scopeofthe invention as expresed in-theclaims.

Therefore I do not wishto be. limited in"- this res'pe ct'butwhat I' do claim is support for a doctor-"blade compri-s-- mg a bracket. stationarily mounted and havinga hub thereonprovide'd with an arcuate 

